South Korea is about 563 times bigger than District of Columbia.

District of Columbia is approximately 177 sq km, while South Korea is approximately 99,720 sq km, making South Korea 56,239% larger than District of Columbia. Meanwhile, the population of District of Columbia is ~601,723 people (51.2 million more people live in South Korea).
Tip: This to-scale comparison of District of Columbia vs. South Korea uses the Mercator projection, which distorts the size of regions near the poles.
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